redfin_bookmarklet.js

/**
 * 1. Convert to a bookmarklet using https://chriszarate.github.io/bookmarkleter/
 *    (minifies, escapes, and adds javascript prefix)
 * 2. Manually create in chrome (right click bookmarks bar, Add Page)
 * 3. Set the URL to the text from (1)
 */
class ListingDetails {
    constructor(
        url,
        addressStreet,
        addressCityStateZip,
        beds,
        baths,
        listPrice,
        estimatedPrice,
        pricePerSqFt,
        sqFt,
        lotSize,
        yearBuilt,
        commutes,
        schools,
        floodRisk
    ) {
        this.url = url;
        this.addressStreet = addressStreet;
        this.addressCityStateZip = addressCityStateZip;
        this.beds = beds;
        this.baths = baths;
        this.listPrice = listPrice;
        this.estimatedPrice = estimatedPrice;
        this.pricePerSqFt = pricePerSqFt;
        this.sqFt = sqFt;
        this.lotSize = lotSize;
        this.yearBuilt = yearBuilt;
        this.commutes = commutes;
        this.schools = schools;
        this.floodRisk = floodRisk;
    }

    getCommuteText() {
        let strings = [];
        for (const c of this.commutes) {
            strings.push(c.getText());
        }
        return strings.join('. ');
    }
    
    getSchoolsText() {
        let strings = [];
        for (const s of this.schools) {
            strings.push(s.getText());
        }
        return strings.join('\n  ');
    }
    
    getSummaryText() {
        let t = this;
        return (`${t.addressStreet},  ${t.addressCityStateZip}:\n` +
                `${t.listPrice} (${t.estimatedPrice}), ${t.pricePerSqFt}/sqFt\n` +
                `${t.beds}br/${t.baths}. ${t.sqFt} sqFt, ${t.getLotSizeText()} lot. ${t.beds}br/${t.baths}. Built ${t.yearBuilt}\n` +
                `${t.getCommuteText()}\n  ${t.getSchoolsText()}\n` +
                `${t.floodRisk}`
               );
        
    }

    getLotSizeText() {
        return `${this.lotSize.split(" ")[0]}`;
    }
}


class Commute {
    constructor(time, dest) {
        this.time = time;
        this.dest = dest;
    }

    getText() {
        return `${this.time}${this.dest.split(',')[0]}`;
    }
}


class School {
    constructor(name, rating, subinfo, distance) {
        this.name = name;
        this.rating = rating;
        this.subinfo = subinfo;
        this.distance = distance;
    }

    getText() {
        let t = this;
        return `(${t.rating}): ${t.name}. ${t.subinfo} ${distance}`;
    }
}


function getCommute(doc, listingDetails) {
    ret = [];
    commutes = doc.getElementsByClassName('Commute');
    for (const c of commutes) {
        time = c.children[1].children[0].textContent;
        dest = c.children[1].children[1].textContent;
        ret.push(new Commute(time, dest));
    }
    listingDetails.commutes = ret;
}

function getSchools(doc, listingDetails) {
    ret = [];
    schools = doc.getElementsByClassName('schools-table-row');
    for (const s of schools) {
        
        name = s.children[0].getElementsByClassName('school-title')[0].textContent;
        ratingElement = s.getElementsByClassName('rating-num')[0];
        rating = ratingElement ? ratingElement.textContent : 'NR';
        distance = s.getElementsByClassName('distance-col')[0].children[0].textContent;
        subinfo = s.getElementsByClassName('sub-info')[0].textContent;
        ret.push(new School(name, rating, subinfo, distance));
    }
    listingDetails.schools = ret;
}

/**
 * Get bed/bath details at top of page
 */
function getBedBathSqftDetails(doc, listingDetails) {
    keyDetails = doc.getElementsByClassName('stat-block');
    fields = {
        'Beds': 'beds',
        'Baths': 'baths',
        'Sq Ft': 'sqFt'
    };
    for (const d of keyDetails) {
        header = d.children && d.children[1].textContent;
        content = d.children && d.children[0].textContent;
        if (header in fields) {
            listingDetails[fields[header]] = content;
        } 
    }
}

function getKeyDetails(doc, listingDetails) {
    keyDetails = doc.getElementsByClassName('keyDetail');
    fields = {
        'List Price': 'listPrice',
        'Redfin Estimate': 'estimatedPrice',
        'Price/Sq.Ft.': 'pricePerSqFt',
        'Year Built': 'yearBuilt',
        'Lot Size': 'lotSize',
    };
    for (const d of keyDetails) {
        header = d.children && d.children[0].textContent;
        content = d.children && d.children[1].textContent;
        if (header in fields) {
            listingDetails[fields[header]] = content;
        } 
    }
}

function getAddress(doc, listingDetails) {
    listingDetails['addressStreet'] = doc.getElementsByClassName('street-address')[0].children[0].textContent;
    listingDetails['addressCityStateZip'] = doc.getElementsByClassName('homeAddress-variant')[0].children[1].textContent;
}

function getFloodRisk(doc, listingDetails) {
    floodRiskDescription = doc.getElementsByClassName('floodPreview')[0].children[0].textContent;
    listingDetails['floodRisk'] = floodRiskDescription;    
}

function getRedfinDetails() {
    details = new ListingDetails();
    details.url = document.URL;
    getAddress(document, details);
    getBedBathSqftDetails(document, details);
    getKeyDetails(document, details);
    getCommute(document, details);
    getSchools(document, details);
    getFloodRisk(document, details);
    return details;
}

textSummary = getRedfinDetails().getSummaryText();

(function (text) {
  var node = document.createElement('textarea')
  var selection = document.getSelection()

  node.textContent = text
  document.body.appendChild(node)

  selection.removeAllRanges()
  node.select()
  document.execCommand('copy')

  selection.removeAllRanges()
  document.body.removeChild(node)
})(textSummary);

alert(textSummary);